Electron beam welding-aerospace applications, Mechanical Engineering

AEROSPACE APPLICATIONS

 

The need for EBW as a critical fabrication process in realising elements and assemblies for spacecraft and launch vehicle programmes due to the following unique requirements.

  1. Welded joints appear in the most critical sections and the performance of the elements / systems depends upon the quality and reliability of these joints.
  2. Requirements of high quality leak proof welded joints for space craft propulsion system with long mission lives under extreme space environment.
  3. Elimination of catastrophic failures in case of launch vehicle propellant tankage assemblies with common bulk head configuration.
  4. Requirement for achieving high quality welds in case of spacecraft thrusters and engines involving materials like Ti, Cb, etc
  5. Distortion free joining for realising thin walled Ti alloy propellant tankage assemblies for spacecraft involving upto 75 EBW joints in a single tankage assembly.
  6. Requirements of achieving high quality joining of thick sections of titanium alloy hemisphere for high pressure helium gas bottles.


Titanium forgings have been joined by EBW t o form a rot or hub of 3000 mm in diameter for a new helicopter. The Ti - 6 AI - 4 V alloy parts of 55 mm and 255 mm thick are EB welded in one pass and joined in the areas of the hub. The hub and blade of the helicopter were formed by EBW since hub and blades could not be forged in one piece. EB welding is being extensively used to join Inconel 718 components together on the engines for the space shuttle.

Posted Date: 9/17/2012 7:47:17 AM | Location : United States







Related Discussions:- Electron beam welding-aerospace applications, Assignment Help, Ask Question on Electron beam welding-aerospace applications, Get Answer, Expert's Help, Electron beam welding-aerospace applications Discussions

Write discussion on Electron beam welding-aerospace applications
Your posts are moderated
Related Questions
explain surfacechemistry and electrochemistry of membranes?

Plastics are the common term for a wide range of synthetic or semi synthetic polymerization products. There are many dissimilar plastics; all have their own density!

Forecasting: Forecasts play a vital role in determining material needs that constitute inventories and in establishing production plans. In this unit, you have studied the imp

Military and Civil Aircraft: Military aircraft can be of several types such as : (a) Cargo carriers, with capacity to carry heavy loads, such as trucks and tanks. (b) Fi

is strain in bending important parameter to consider?

Wall-type bunds / dikes for storage compounds should be from 0.5 m to 1.5 m high (1.5 ft. - 5 ft. - check local codes and regulations), depending on the required containment capaci

three indications of centrifugal pump cavitating

Q. What is Injection moulding? An important industrial method of producing articles of thermoplastics is injection moulding. The moulding material is loaded into a hopper from

Sign convention which is used for solving problems of beam: Although different sign conventions can be used, most of the engineers use following sign conventions for shear for

Location with Respect to Depth The depth below ground level at which the bottom of a foundation structure is located depends on number of factors, the most important of which